Note 7 - Income Taxes (Tables)

12 Months Ended

Jan. 31, 2017

Notes Tables

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	Years Ended January 31,
	2017		2016
Federal:
Current	$	—	$	—
Deferred		—		—
State:
Current		5		4
Deferred		—		—
Foreign:
Current		—		—
	$	5	$	4

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	Years Ended January 31,
	2017						2016
	Amount			Percent Pretax Income			Amount			Percent Pretax Income
Income (loss) from operations before income taxes	$	845			100	%	$	(1,346	)		100	%
Computed “expected” income tax benefit on loss from operations before income taxes	$	287			34	%	$	(538	)		40	%
State tax, net of federal benefit		50			6	%		(73	)		5	%
Tax credits		—			0	%		—			0	%
Change in valuation allowance		(337	)		(40	)%		626			(47	)%
Permanent differences		—			0	%		1			0	%
Return to provision adjustments		—			0	%		—			0	%
Change in state tax rate		—			0	%		—			0	%
Other, net		5			0	%		(12	)		0	%
Income tax expense	$	5			0	%	$	4			0	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	January 31,
	2017			2016
Deferred tax assets:
Property and equipment, principally due to differing depreciation methods	$	145		$	153
Accruals and reserves		140			145
Net research and manufacturer investment credit carryforwards		2,325			2,325
Net operating losses		13,493			13,832
AMT credit carryforwards		136			136
Stock based compensation		156			140
Other		—			—
Total gross deferred tax assets		16,395			16,731
Less: valuation allowance		(16,395	)		(16,731	)
Net deferred tax assets	$	—		$	—

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

	Unrecognized Tax Benefits
Balance at February 1, 2016	$	767
Additions based on tax positions related to the current year		—
Reductions due to lapses of statute of limitations		—
Tax positions of prior years		—
Balance at January 31, 2017	$	767